二-十进制

The poly with p-aminophenyl-ethynyl as a side-group was synthesized through Pd-catalyzed Sonogashira coupling reaction between 4-[(2,5-dibromophenyl)ethynyl] aniline and 1,4-diethynyl-2,5-bis benzene.

通过单体4-[(2，5-二溴苯)乙炔基]苯胺和1，4-二乙炔基-2，5-二戊氧基苯之间的Sonogashira偶合反应合成了带有p-氨基苯乙炔基共轭侧基的聚对苯撑乙炔。

Main Ingredients: Water,Hamamelis Virginiana Water,Glycerin,Propylene Glycol,Gm Euglena Gracilis Polysaccharide,Betaine,Aloe Barbadensis Leaf Juice,Hydrolyzed Wheat Protein,Sodium Pca,Tocopheryl Acetate,Polysorbate 20,Creatine,Hyaluronic Acid.

主要成分：去离子水，金缕梅蒸馏液，甘油，丙二醇，细小裸藻多糖，甜菜碱，芦荟叶提取物，水解小麦蛋白，吡咯烷酮羧酸钠，生育酚乙酸酯，聚山梨醇酯-20，肌酸，透明质酸，乙二胺四乙酸四钠，香精，苯氧乙醇，辛二醇，山梨酸。

On the basis of the kinetic equation of substrate reaction in the presence of urea or guanidine hydrochloride, all microscopic kinetic constants for the free enzyme and enzyme-substrate binary and ternary complexes have been determined. The results of the present studies indicate that:①In the presence of urea or guanidine hydrochloride, enzyme-substrate complexes lose their activity less rapidly than the free enzyme. Therefore, both substrates, NADPH and 7, 8-dihydrofolate, protect dihydrofolate reductase against inactivation.②The denaturation of dihydrofolate reductase by urea follows single-phase kinetics, and changes in enzyme activity and tertiary structure proceed simultaneously in the unfolding process, so it may be an"all or none"process.③The GdnHCl-induced unfolding of the dihydrofolate shows a biphasic transition, while the change in the enzyme activity is a single exponential process. The rate constant of inactivation is consistent with that of the fast conformational change. Therefore, the kinetic intermediate of protein unfolding should be a partially folded and inactive form.

我们根据在脲或盐酸胍存在下的底物反应动力学方程求得游离酶和酶底物二元、三元复合物的微观动力学常数，结果表明：①酶-底物二元、三元复合物的失活速度明显慢于游离酶，说明两个底物二氢叶酸和NADPH对酶的失活都具有一定程度的保护作用；②在脲作用下，酶的失活和构象变化均为单指数项过程，而且酶的活力丧失和三级结构变化是同时发生的，说明二氢叶酸还原酶的脲变性可能是一个"全或无"的两态过程；③在盐酸胍作用下，酶的构象变化为两相过程，而失活则是单指数项过程，酶分子构象变化的快相速度常数与失活速度常数基本一致，因此我们认为二氢叶酸还原酶的盐酸胍变性过程中存在一个没有活力、但仍具备一定空间结构的变性中间体。

Inner point and exterior point of a quadric and its plane of the type of contact plane;2. The article gives a way by which a quadratic curve is processed by a linkage,and then a quadric can be formed by revolving the quadratic curve as a generatrix around the axis.

提出一种利用能够生成二次曲线的连杆机构作辅助装置，将生成的二次曲线作为母线绕轴线旋转而形成旋转二次曲面的方法，从理论上进行了推导，并通过实例说明了该方法的应用。

This time by police investigating Kuan Kung, mistaken for "flying base," two surrender him, issued a fatwa to kill two lakes, only two are forced to fight back.

这个时候关公被警察调查，误以为是"飞基"二人出卖他，于是发出江湖追杀令追杀二人，二人迫于无奈只有奋力反击。

It divided the evolvement process into four phases: form the independence to thefoundation of the government, the ruling stage of the Federal party, the stage of the DemocraticRepublican Party, withdrawing from the political arena.

本文主要论述他们共同参与的重大历史活动以及二人的相互关系，以二人共同经历的重大历史事件为点，用时间纵线将它们串联起来，把二人关系的发展过程划分为四个阶段：从独立到创建政府时期，联邦党政府时期，民主共和党人统治时期以及退出政治舞台时期。

GC/MS analysis on the leaf oil indicated that the main components with a relative content of ≥3% were alloocimene (43.22%),α-pinene (13.63%),γ-terpinene (5.49%),-3, 7-dimethyl-, 2, 6-octadien-1-ol (3.58%),β-fenchyl alcohol (4.58%), and 2-amino-3, 5-dicyano-6-(4-methoxyphenoxy)-pyridine (3.67%).

用GC/MS联用方法，对巨尾桉挥发油进行鉴定，相对百分含量在3%以上的化合物有：α-蒎烯(13.63%)、别罗勒烯(43.22%)、γ-萜品烯(5.49%)、3，7-二甲基－2，6-辛二烯醇(3.58%)、β-小茴香醇(4.58%)和2-氨基－3，5-二氰基-6-（4-甲氧基苯氧基）－吡啶(3.67%)。

And this means that a two-dimensional Flatlander traveling down the line we just drew would end up back where they started without ever feeling like they had left the second dimension.

这么看来，这条纸只有一个边，所以说它必须是二维的，也就是说，如果一个二维的Flatlander沿着我们画的这条线走的话，它将会回到它的起点而觉得他从未离开过二维世界。

So it has made the great progress. The method studied in this research from o-Dichlorobenzene is a ideal route to synthesize 2,4- dichlorofluorobenzene, which has temperate condition easy to control,safe process,low cost and good quality of products; The method of Phase transfer catalysis fluorination without solvent is better than present technology in presence of DMSO as solvent in many aspects; In a word,it is worth being promoted by the domestic correlative factories.

本课题所研究的以邻二氯苯为原料的2，4-二氯氟苯合成路线反应条件温和，工艺容易控制，生产安全，而且产品质量好，是比较理想的合成路线；以季胺盐为催化剂的无溶剂相转移催化氟化法与溶剂法相比具有明显的优势；通过实验确定的工艺条件对工业化生产有重要的指导意义，可提高以邻二氯苯为原料的工艺路线的市场竞争力。

In the wet-process phosphoric acid production from the Hubei phosphate ore, one of the bothersome problems is that potassium fluosilicate and sodium fluosilicate scales are liable to form on the filtration system owing to its high potassium and sodium content, which greatly restrains the application of Hubei phosphate ore.

本文首先采用人工冷却系统模拟湿法磷酸生产的真空过滤系统冷却过程，研究垢物的析出规律，实验结果得知：垢物的主要成分为氟硅酸钠和氟硅酸钾，氟硅酸钠首先析出，结构致密，其次是氟硅酸钾，最后是二水硫酸钙，氟硅酸钠对氟硅酸钾有很强的结晶诱导作用；然后在三种生产中常用的不同的材质钼二钛、聚氯乙烯和聚四氟乙烯表面进行结垢试验，发现聚四氟乙烯表面最不易结垢，而在钼二钛表面最易结垢。

Breath, muscle contraction of the buttocks; arch body, as far as possible to hold his head, right leg straight towards the ceiling (peg-leg knee in order to avoid muscle tension).

呼气，收缩臀部肌肉；拱起身体，尽量抬起头来，右腿伸直朝向天花板（膝微屈，以避免肌肉紧张）。

The cost of moving grain food products was unchanged from May, but year over year are up 8%.

粮食产品的运输费用与5月份相比没有变化，但却比去年同期高8％。